Marine motor.



c. F. M0035. MARINE MOTOR.

APPLICATION FILED JAN. 27. |915- Patenbed Jan.1,191&

2 SHEETS-SHEETI IE.. I!

A NVENTOP\= CHARLES FRANCIS MC1 DRE C. F. MOORE.

MARINE MOTOR.

APPLICATION FILED IAII.21. |915.

1,252,360, Patented J an. 1 1918I 2 SHEETS-SHEET 2.

INVENTOEI CHARLES FRANCIS MUERE CHARLES FRANCIS MOORE, OF WEST ROXBURY, MASSACHUSETTS, ASSIGNOB, BY MESNEv MARINE MOTOR.

Specification of Letters Patent.

Patented J an. 1, 1918.

Application led January 27, 1915. Serial No. 4,757.

To all whom, it may concern.' y

Be it known that I, CHARLES FRANCIS Moontn citizen of the United States, residing at West Roxbury, county of Suffolk, Commonwealth of Massachusetts, have invented certain new and useful Improvements in Marine Motors, of which the following is a, specification.

This invention relates to marine motors and particularly to a motor equipment `of the so called outboard type.

The usual outboard motor has proved unsatisfactory in several regards, one of the chief of which has been excessive vibration. The disastrous effect of vibration in gas engine practice is well known but such vibration is particularly serious where the motor is applied to the stern construction of a boat. The shock of a piston working at` motor is primarily to enable it to be carried' from place to place and attached to any small boat without reference to the stern construction, the one cylinder motor has failed in this respect.

The present invention has for one of its objects to provide an outboard motor which will be universally applicable to all stern constructions. This object vis attained in the present invention by the use of a motor of the double opposed cylinder type set transversely or abeam. The motor is adjustably connected with the stern by a special clamp so as to position its opposed cylinders parallel to the stern irrespective of the angle of the stern and the cylinders are exploded simultaneously, so as to absorb the power shocks in each other. The motor is therefore perfectly balanced and the power shocks of the pistons work in harmony with each other instead of against the stern construction. Themotor is therefore practically non-vibrating and does not require a reinforced or specially built stern structure with its added expense.

Another object of my invention is to proylde a self-contained outboard motor where- 1n all the moving parts are inclosed to prevent accidental injury to the occupants of the boat. The usual marine motor, both outboard and inboard, has had its fly wheel exposed with the attendant liability of the fiy wh'ee l catching in the clothing or spattermg dlrt or grease upon the occupants of the boat. This I have overcome in my present lnvention by providing a superimposed fuel tank concentric with the fly wheel and resting on a shell which also acts as a lateral guard.

A further object of my invention is to provide an outboard motor wherein quiet running is secured without the use of a muffler. This is effected in the present invent1on by carrying the exhaust from the cylinders down through the crank shaft housing over the propeller shaft and exhausting under water into the race created by the thrust of the propeller blades.

These and various other features of advantage which will appear more fully hereinafter are secured in the motor forming the subject matter of my present invention. The construction and operation of my invention will be more fully disclosed in the specification which follows. In the drawings forming a. part of that specification, I have shown a, form of motor which not only Vclearly illustrates the principles involved,

but is in itself a construction which has proven satisfactory in use and well adapted to the requirements of manufacture.

Throughout specification and drawin s like reference numerals are corresponding y applied, and in these drawings:

Figure 1 is a central section through an and does not subject the stern to the ham-- mering action of the explosions, as has been the case where a single cylinder motor has worked at right angles to or directly agamst the stern. This prevents weakening of the stern and. consequent leakage of the hull and does notrequire a reinforced or special stern construction. f The means for attaching` the motor to the .'10 stern in this manner consists of a yoke like clamp adjustably engaged with the motor and arranged for detachable connection with the stern of a boat. The clamp consists of a pair of spaced hangers 2, pivoted at 3 to the crank case '4 of the motor. The

upper ends of the hangers terminate in a pair of clamping armsl'spaced from the hangers and connected at their free ends in spaced relation to cach other by a connecting web 51. lThe arms 5 are adapted tov be hooked over the upper edge of the stern and are detachably held upon the inboardside of the stern. by a pair ofv clamping screws 6 set up 1n the free ends of said arms. This positions the hangers 2 on the outboard side of the stern in contact therewith throughout their length. The lower ends of the hangers are connected to each other by a web 7 which forms a seat for the cross bar 71 of a pair of spaced arms l8.

The arms 8 are pinned to the hangers 2 at 81 and are slotted as indicated at 9. A collar 101 is adjustably held in said slots by a air of bolts 91 set up in a pair of-channe ed guide pieces 10 slidable on said arms 8. The collar 101 adjustably clamps the housing 11 for the crank shaft 12. This construction permits a lateral adjustment of the clamp as a whole on its pivots 3 relative to the stern to secure vertical positioning of the motor outboard irrespective of the stern angle.

The opposed cylinders 14 of the motor ,are disposed transversely or abeam of the stern. The cylinders are supplied with fuel from a fuel tank 15 bv a feed tube 1 6 connecting with a carbureter 17 ydellvering to the intakes of the cylinders. The fuel tank 15 seats on a. supporting shell 41 formed on the crank case 4 and is disposed in concentric covering relationto la fly wheel 18 wholly inclosed within the shell. The shell 41 therefore provides a support for the fuel tank as well as a lateral guard 'for the Hy v wheel, and the fuel tank provides a guard and cover for the upper face of the fiy wheel which would otherwise be exposed.

The upperpart 19 of the crank shaft 12 upon which the fly wheel is mounted is ver' tically journaled in suitable bearings and passes through the fuel tank; The crank shaft has a cam 20 at its upper end for operating a timer (not shown) whereby to explode the cylinders simultaneously. The

/ crank shaft is connected with the piston's Y14.1l of the rods 14.A The cylinders exhaust through la manifold 21 which connects with the crank shaft housing 11. The exhaust is carried down through the'housing and delivered under water through an exhaust o ening22 therein registering with an opening in the bearing' 23 for the lower end of the shaft 12.

This obviates the use of a muflier for the exhaust. f

The cylinders are suitably water jacketed cylinders by suitable connecting? andv are cooled by a water circulating pump I 24. The pump 24-mav be of any type but is preferably of the plunger type. The water is taken in by the pump through a suit'- Inaled in suitable bearings in a two part housing 29 and carries a propeller 30 at its free end externally of the housing. At its other end, the shaft 26 has a cam 31 for operating the plunger of the pump 24.

The two parts of the housing are connected in any suitable manner as by a screw thread 32 and set screw 33. One part of the housing has an integralrudder 34. The

rudder may be controlled either by a steering rope or a handle. In the embodiment illustrated I have shown a steering handle 35. The handle 35 is pinned in a lug 36 on a tubular casting 37. The casting 37 is sleeved about the crank sha-ft 12 and connects the collarend of the manifold 21 with the crank shaft housing 11. The casting is turned. in the discharge end of the manifold by the handle to swing the Crank shaft 12 .and housing 11 and with them the propeller and rudder about a vertical axis. The passagel of the exhausted gases and of the water cooling the cylinders through the exhaust manifold is not interfered with in these swinging movements for the casting 37 is provided with two opposed ports 38 and an annular space 39 through which the exhaust may pass-when the casting is turned sufficiently to move one of its ports out of regisfold.

In use, the motor may be attached to the stern of any vsmall boat by means of the clamp andthe clamp adjusted to position the crank shaft vertically relative to the stern, irrespective of the angle of the stern, and to dispose the cylinders substantially parallel to the stern. The cylinders are ex- 130 try with the delivery opening of the maniploded simultaneously so that their power shocksare absorbed in each other. "I he exhaust gases and also the water coolmg` the cylinders are discharged under water through the manifoldand crank shaft housing. The fuel tank being supported directly above the fly wheel covers and guards the fly wheel at its top face and the supportlng shell for the fuel tank incloses and guards the fly wheel laterally. The motor is therefore self-contained and has its moving parts covered to protect the occupants of the boat from injury. f Various modifications in the form and construction of my device may obviously be restorted to within the limits of the appended claims.

, What I therefore claim and desire to secure by Letters Patent is:

1. In an outboard propulsion device, a liquid fuel motor, a crank shaft therefor, means for supporting said motor shaft on the stern of a boat, a supporting wall arranged above the motor, a fuel tank mounted upon said supporting wall, and a fly wheel on said crank shaft and disposed within said wall below said tank.

2. In an outboard propulsion device, a liquid fuel motor` a crank shaft therefor, 4means for vertically supporting said motor shaft on the stern of a boat, a crank case, a horizontally disposed supporting shell on said crank case, a fuel tank superimposed upon said supporting shell, and a flywheel on said crank shaft disposed within said shell below 'said tank.

3. In an outboard motor, a vertical crank shaft, means for supporting said shaft on the stern of a boat, a horizontally disposed fly wheel on said shaft adjacent to its upper end, a supporting shell inclosing said fly wheel, and a cylindrical fuel tank of substantially the diameter of the fly wheel supported on said shell in superimposed substantially concentric covering relation to said ily wheel.

4. In an engine, a cylindrical support, a shaft mounted therein, a cylindrical fuel tank seated on said support, a fly wheel on said shaft below said tank and covered thereby and wholly inclosed within said suport. p 5. In an outboard motor, a crank shaft, means for supporting said shaft on the stern of a boat, a double opposed cylinder simultaneously firing power plant operatively connected with said crank shaft and arranged substantially parallel to the stern, a housing for said crank shaft having an under-water exhaust opening, and an exhaust manifold connecting said cylinders with said housing.

6. In an outboard motor, a crank shaft, means for supporting said shaft on the stern of a boat, and 'a double opposed cylinder simultaneously r4firing 4power plant operatively connected with` said lcrank shaft and `arranged substantially parallel to the stern,

wall above said power plant, a fly wheel on said crank shaft disposed horizontally within said wall, and a fuel tank seated on said supporting wall above said fly wheel and in covering relation thereto.

8. In an outboard motor, al crank shaft, a clamp for supporting said shaft on the stern of a boat comprising a yoke having detachable engagement with said stern upon the inboard side thereof, means for adjustably connecting said shaft to said yoke, a. housing for said crank shaft, a double opposed cylinder simultaneously firing power plant operatively connected with said shaft and exhausting into said housing, a water cooling system for said power lplant discharging with said exhaust, a supporting wall arranged above the power plant, a fuel tank mounted upon said supporting wall,

and a fly wheel on said. crankshaft and disposed within said wall below said fuel tank.

9. In an outboard motor, a support, a shaft mounted therein, a fuel -tank on said support, and a fly wheel on said shaft below said tank and covered thereby. Y

10. In an outboard motor, a support, an annular fuel tank, a shaft mounted in said support and having its end exposed through the opening of said annular tank and arranged to be engaged by a crank for startingi and a fly wheel on said shaft below said tan c.

'11. In a liquid fuel motor, a hollow member rigidly mounted, a shaft extending therethrough and having an end exposed for engagement by a starting device, and a fly wheel on said shaft and inclosed within said hollow member.

12. In an outboard propulsion device, a liquid fuel motor, a shaft, a fly wheel on said shaft, a shell inclosing said fly wheel, anda fuel tank seated on said shell.

13. In a liquid fuel motor, a hollow supporting member rigidly mounted, a fuel tank supported on said member. a shaft extending through said member and tank and having an end exposed foren gement by motor with said housing, and a Water coola startin device, and a fiy w eel on said shaft inc osed within said hollow member and covered by said fuel tank.

l1,4. In an outboard propulsion device. a liquid fuel motor, a crank shaft, a housing for said shaft having an underwater exhaust, anexhaust manifold connecting said ing system for said motor discharging with the. exhaust through said manifold.

15. In an outboard propulsion device, a.

liquid fuel motor, a crankshaft, a bearin for said crank shaft at its lower end, sai

bearing having a port, a housing for said shaft having a port registering .with said port in the bear1ng,.said registering ports constituting an under water exhaust, and an :exhaust manifold connecting said motor with the housing and discharging through said underwater exhaust. i

16. In an outboard propulsion device, a liquid fuel motor, a crank shaft, abearln for said'crank shaft at its lower end, said bearing having a port, a housing for said shaft having a port registering with said port in the bearmg, said registering ports constituting an under water exhaust, an exhaust manlfold connecting said motor with the housing and discharging through said under water exhaust, and a water cooling system for said motor discharging with the products of' combustion from the motor through said manifold and under water exhaust.

17. In an outboard propulsion device, a liquid fuel motor', a support, a crank shaft mounted therein, a housing for said crank shaft having an underwater exhaust, ,an exhaust manifold connecting said motor with said housing, a fuel tank on said support, and a ily wheel on said crank shaft below said tank.

18. In an outboard propulsion device, a liquid fuel motor, a support, a crank shaft mounted therein, a housing forsaid crank shaft having an under water exhaust, an exhaust manifold connecting said motor with said housing, a water cooling system for said -motor discharging with the productions of combustion through said manifold, a fuel tank on said support, and a'y wheel on said crank shaft within said support and below said tank.

19. In an outboard propulsion device, a

. liquid fuel motor, a crank shaft, a housing said propeller shaft, having an-integral rudder portlon, an exhaust manifold connecting said motor with said crank shaft housing, a'. casting sleeved about said crankshaft and turning within the discharge end of said manifold, and aV steerin member operatively connected with sai casting.

20.- In an youtboard propulsion device,fa

liquid fuel motor avcrank shaft, a housingller shaft operatively conopposed ports adated for registr with the 'discharge end of t e manifold an having-a bypass to permit passage of the exhaust A from said manifold into the housing, and

a steering member operatively connected with said casting. 21. In an out liquid fuel motor, a crank shaft, a housing therefor, an exhaust manifold connecting said motor' with said housing, va cast-ing sleeved about said shaft and turning within the discharge end of the manifold, said cast- 'Ing having a pair of opposed ports adapted for registry with the discharge end of the manifold and having a by-pass permitting passage of the exhaust from said manifold into the housing.

22. In. an outboard propulsion device, a liquid fuel motor, a crank shaft, a housing therefor, an exhaust manifold connecting said motor with said housing, a casting sleeved about said shaft and turning within the dischargekend of the manifold, said casting having a pair of opposed ports adapted for registry with the discharge end of the manifold and having a by-pass permitting oard` propulsion device, a l 'i passage of the exhaust from said manifold 

